Double Delta Production in the gamma d ---> p n pi+ pi- Reaction

Abstract

We have studied the gamma d ---> Delta++ Delta- reaction which requires the collaboration of the two nucleons in deuteron. By means of a model previously developed for the gamma p ----> p pi+ pi- reaction, the two body exchange currents leading to double delta creation are derived. A fair agreement is obtained with a recent experiment, but more precise measurements and the extension to higher photon energies look advisable in order to see the limits of the present theoretical approach

Comments: 7 pages, 2 figures. TeX, Version 3.141 [PD VMS 3.4/CERN 1.0]